Added reference for DAQ decimation filter test documents.

git-svn-id: https://redoubt.ligo-wa.caltech.edu/svn/advLigoRTS/trunk@3369 6dcd42c9-f523-4c6d-aada-af552506706e

doc/test.dox

@@ -19,5 +19,6 @@
 	- \ref duotoneTest "Duotone Test"
 	- \ref dackillTest "DACKILL w/OSEM Watchdog Test"
 	- \ref decFiltTest "IOP Decimation Filter Test"
+	- \ref daqFiltTest "DAQ (daqLib) Decimation Filter Test"
 */